diff --git a/debian/rules b/debian/rules
index 6bc93b0c..05628bee 100755
--- a/debian/rules
+++ b/debian/rules
@@ -64,8 +64,8 @@ ifneq "$(wildcard /usr/share/misc/config.guess)" ""
 endif
 
 	# Apply our patches to Wine
-	for DIR in $(find $(CURDIR)/patches/ -type d | sort); do \
-		for FILE in $(ls $$DIR | sort); do \
+	for DIR in $$(find $(CURDIR)/patches/ -type d | sort); do \
+		for FILE in $$(ls $$DIR | sort | grep '\.patch$$'); do \
 			patch -N -p0 --strip=1 < $$DIR/$$FILE || exit 1; \
 		done \
 	done